What Is Plaster Mold Casting?

Gypsum casting is a technology developed from the jewelry and dental industries and is mainly used to produce relatively small parts.

Plaster mold casting

Right!

Gypsum casting is a technology developed from the jewelry and dental industries and is mainly used to produce relatively small parts.

Compared with the traditional shell making process, the production time is shorter, so it is gradually used in rapid prototyping. In the gypsum infusion machine, gypsum powder and water are mixed under vacuum, and then poured into a small metal box containing a wax tree, so it is also called the box technology. After the gypsum has cured, the moulding box is gradually heated to a casting temperature of 300-500 ° C. It is then cooled down depending on the casting material. After the casting is completed, the mold shell is crushed with high-pressure water, and then the parts are removed from the plaster. Finally, the parts are sent for heat treatment.

advantage:

1. The surface quality is particularly good.

2. Stir materials only when needed.

3. No core is required.

4. It is easy to break the mold shell with water.

Disadvantages:

1. Only applicable to small and medium size parts.

2. Only applicable to low melting alloys, such as cast aluminum, not steel and high temperature alloys.

3. Large amount of materials and waste.

4. Due to the longer solidification time (related to the size of the mold box), the casting quality is not good.